1. a pouch, fleshy bag, or container, usually holding two nuts,
testes, apples,
jewels, or others;
ballsac.
2. A persons private space, area, or way of life.
1. Dude you just
punched him right in
the sac.
2. Dude why are you all over his sac, he told you
the story already, get off his sac.